數學問題...

1.
16=-8(5p+8)
16=-40p-64
16+64=-40p
80/40=-p
p=2



2.
5(y+4)-6(8+3y)=-2
5y+20-48-18y=-2
5y-18y=-2-20+48
-13y=26
-y=26/13
y=-2






2007-10-07 21:13:37 補充：
5(7┼3q)┼12=25(7┼3q)=-107┼3q=-23q=-9不要以為方程式獨一無二﹗好像方程式7k-(9k-16)=14-(19-k)，在知識┼問不知過多少次﹗麻煩你有這些方程式不懂做時，請先在知識┼搜尋一下。

2007-10-07 21:36:29 補充：
「在知識┼問不知過多少次﹗」應改為「在知識┼問過不知多少次﹗」

1} 16=-8(5P+8)
16/-8=5p+8
-2=5p+8
-2-8=5p
-10=5p
-10/5=p
p=-2


2}5(Y+4)-6(8+3Y)=-2
5y+20-48-18y=-2
-13y-28=-2
-13y=-2+28
-13y=26
y=26/-13
y=-2

1

16=-8(5p+8)
16=-40p-64
16+64=-40p
80/40=-p
p=2



2.

5(y+4)-6(8+3y)=-2
5y+20-48-18y=-2
5y-18y=-2-20+48
-13y=26
-y=26/13
y=-2

1} 16=-8(5P+8)
16/-8=5p+8
-2=5p+8
-2-8=5p
-10=5p
-10/5=p
p=-2
2}5(Y+4)-6(8+3Y)=-2
5y+20-48-18y=-2
-13y-28=-2
-13y=-2+28
-13y=26
y=26/-13
y=-2

1) 16 = -8 (5P + 8)
16/-8 = 5P + 8
-2 = 5P + 8
-2 - 8 = 5P
-10 = 5P
-10/5 = P
P = -2

2) 5(Y+4)-6(8+3Y) = -2
5Y + 20 - 48 - 18Y = -2
-13Y - 28 = -2
-28 + 2 = 13Y
-26 = 13Y
Y = -2

1} 16=-8(5P+8)
16=(-40)P+(-64)
80=(-40)P
-2=P

2} 5(Y+4)-6(8+3Y)=-2
5Y+20-48+15Y=-2
20Y=-2-20+48
20Y=26
Y=1.4

1} 16=-8(5P+8)
16/-8=5p+8
-2=5p+8
-2-8=5p
-10=5p
-10/5=p
p=-2
2}5(Y+4)-6(8+3Y)=-2
5y+20-48-18y=-2
-13y-28=-2
-13y=-2+28
-13y=26
y=26/-13
y=-2

1} 16=-8(5P+8)
16=-40P-64
16+64=-40P
80=-40P
-2=P

2} 5(Y+4)-6(8+3Y)=-2
5Y+20-48-18Y=-2
5Y-18Y=-2-20+48
-13Y=26
Y=-2